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  2. Omega constant - Wikipedia

    en.wikipedia.org/wiki/Omega_constant

    The omega constant is a mathematical constant defined as the unique real number that satisfies the equation = It is the value of W(1), where W is Lambert's W function. The name is derived from the alternate name for Lambert's W function, the omega function. The numerical value of Ω is given by

  3. Lambert W function - Wikipedia

    en.wikipedia.org/wiki/Lambert_W_function

    The product logarithm Lambert W function plotted in the complex plane from −2 − 2i to 2 + 2i The graph of y = W(x) for real x < 6 and y > −4.The upper branch (blue) with y ≥ −1 is the graph of the function W 0 (principal branch), the lower branch (magenta) with y ≤ −1 is the graph of the function W −1.

  4. List of mathematical constants - Wikipedia

    en.wikipedia.org/wiki/List_of_mathematical_constants

    A mathematical constant is a key number whose value is fixed by an unambiguous definition, often referred to by a symbol (e.g., an alphabet letter), or by mathematicians' names to facilitate using it across multiple mathematical problems. [1]

  5. Generating function - Wikipedia

    en.wikipedia.org/wiki/Generating_function

    The ordinary generating function of a sequence can be expressed as a rational function (the ratio of two finite-degree polynomials) if and only if the sequence is a linear recursive sequence with constant coefficients; this generalizes the examples above. Conversely, every sequence generated by a fraction of polynomials satisfies a linear ...

  6. Greek letters used in mathematics, science, and engineering

    en.wikipedia.org/wiki/Greek_letters_used_in...

    the omega constant 0.5671432904097838729999686622... [58] an asymptotic lower bound notation related to big O notation; in probability theory and statistical mechanics, the support; a solid angle [59] [60] the omega baryon; the arithmetic function counting a number's prime factors counted with multiplicity; the density parameter in cosmology [61]

  7. Hyperreal number - Wikipedia

    en.wikipedia.org/wiki/Hyperreal_number

    The real numbers are considered as the constant sequences, the sequence is zero if it is identically zero, that is, a n = 0 for all n. In our ring of sequences one can get ab = 0 with neither a = 0 nor b = 0. Thus, if for two sequences , one has ab = 0, at least one of them should be declared zero. Surprisingly enough, there is a consistent way ...

  8. Wright omega function - Wikipedia

    en.wikipedia.org/wiki/Wright_Omega_Function

    One of the main applications of this function is in the resolution of the equation z = ln(z), as the only solution is given by z = e −ω(π i).. y = ω(z) is the unique solution, when for x ≤ −1, of the equation y + ln(y) = z.

  9. Discrete-time Fourier transform - Wikipedia

    en.wikipedia.org/wiki/Discrete-time_Fourier...

    But those things don't always matter, for instance when the [] sequence is a noiseless sinusoid (or a constant), shaped by a window function. Then it is a common practice to use zero-padding to graphically display and compare the detailed leakage patterns of window functions.